Following the popularity of the hack, many have turned to a 2017 study to explain the science behind it all. The study found that lactucarium, which is found in lettuce, had a sedative effect on mice.

A 2018 study in humans looked at the effect of lettuce seed extract on pregnancy-related insomnia and found that it did indeed ... specifically a dried milky substance secreted called lactucarium.

Extract from lettuce (Lactuva sativa), especially romaine lettuce, contains lactucarium which has been studied in mice and been shown to help induce sleep and relieve pain.

The trend is said to be supported by science - in mice ...

Foods high in the amino acid tryptophan and lactucarium will help you fall asleep, such as lettuce and chickpeas. Skip to main content. Boydton, VA. Boydton, VA. Local News ...

What the Research Says. Lettuce may have hypnotic sleep-inducing effects. It contains a fluid called lactucarium, which can make you feel sleepy.. You can actually see this milk substance if you ...

People struggling to sleep have started boiling lettuce in a mug and then drinking the water, a strange method which some experts have claimed could work - and it has now gone viral ...